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Finding the Fourth Proportional to 652,649.68, 978,857.68 and 415,287.28

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Solution

The fourth proportional to 652,649.68, 978,857.68 and 415,287.28 is: 622,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,649.68 : 978,857.68 = 415,287.28 : x
  2. Step 2: Convert to fraction form
    652,649.68/978,857.68 = 415,287.28/x
  3. Step 3: Cross multiply
    652,649.68x = 978,857.68 × 415,287.28
  4. Step 4: Simplify right side
    652,649.68x = 406,507,143,434.31
  5. Step 5: Solve for x
    x = 406,507,143,434.31/652,649.68
  6. Step 6: Final answer
    x = 622,856.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.